ISO 4463-2:1995

Overview

ISO 4463-2:1995 - "Measurement methods for building - Setting-out and measurement - Part 2: Measuring stations and targets" specifies how to establish, mark and maintain measuring stations and targets on building sites. It covers the progressive stages of locating, constructing and documenting control points (stations, targets, benchmarks) and provides illustrative examples and location-plan symbols in Annex A. This part applies to all types of building construction and is intended to ensure stability, accessibility and clear lines of sight throughout the construction process.

Key topics

• Scope and applicability: Establishes requirements for measuring stations and targets used in setting-out and measurement on building sites.
• Planning and location: Guidance on choosing station locations considering ground conditions, site layout, utilities, accessibility and intended duration of use.
• Functional needs: Requirements for stability, durability, access, lines of sight and unique identification/marking of stations and targets.
• Protection and marking: Recommendations for physical protection (posts, guards) and unambiguous marking and referencing on location plans.
• Station and target description: Minimum descriptive information to record (sketch, ID/reference, construction form, coordinate/level, date) to make points easily relocatable.
• Maintenance and inspection: Visual checks and measurement-based verification to detect disturbance, with procedures for re‑instating or replacing invalid points.
• Annex A (informative): Examples of station/target types, markers, protection methods, sample location plans, symbols and guidance on expected durations (short, medium, long term).

Applications

ISO 4463-2 is practical for any construction activity needing reliable horizontal and vertical control, including:

• Establishing site control networks and benchmarks for building, civil engineering and infrastructure projects
• Setting out foundations, structural grids, kerbs and utilities
• Positional checks during construction and handover surveys
• Designing protection measures for long‑term control points
• Preparing location plans and documenting survey points for project records

Keywords: ISO 4463-2, measuring stations, targets, setting‑out, benchmarks, building site survey, station protection, location plans.

Who should use this standard

• Chartered surveyors and construction surveyors
• Site engineers and layout crews
• Contractors and site managers
• Quality assurance/inspection teams
• Design offices preparing survey briefs or location plans

Related standards

• ISO 4463-1: Planning and organization, measuring procedures, acceptance criteria
• ISO 4463-3: Check‑lists for the procurement of surveys and measurement services
• ISO 1803: Vocabulary for dimensional accuracy (normative reference)

This standard helps ensure consistent, documented control point practice on building sites, improving measurement reliability and reducing rework risk.